<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRolesVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children"
              :key="item1.id">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过 for 循环 嵌套渲染二级权限 -->
                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children"
                  :key="item2.id">
                  <el-col :span="6">
                    <el-tag closable @close="removeRightById(scope.row, item2.id)" type="success"> {{ item2.authName
                      }}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable
                      @close="removeRightById(scope.row, item3.id)">{{ item3.authName }}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button size="mini" @click="showEditRoles(scope.row.id)" type="primary"
              icon="el-icon-search">编辑</el-button>
            <!-- 删除按钮 -->
            <el-button @click="removeUserById(scope.row.id)" size="mini" type="danger"
              icon="el-icon-delete">删除</el-button>
            <!-- 分配角色按钮 -->
            <el-button size="mini" type="warning" icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- visible.sync显示隐藏 添加-->
    <el-dialog @close="addRolesClosed" title="修改角色" :visible.sync="addRolesVisible" width="50%">
      <!-- 内容主体区域 -->
      <el-form ref="addFormRef" :model="addForm" :rules="addFormRoles" label-width="80px">
        <!-- 角色名称 -->
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <!-- 角色描述 -->
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRolesVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改 -->
    <!-- 修改用户对话框 -->
    <el-dialog @close="editRolesClosed" title="修改角色" :visible.sync="editRolesVisible" width="50%">
      <!-- 内容主体区域 -->
      <el-form ref="editFormRef" :model="editForm" :rules="addFormRoles" label-width="70px">
        <!-- 角色名称 -->
        <el-form-item label="角色名称" prop="email">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <!-- 角色描述 -->
        <el-form-item label="角色描述" prop="mobile">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 顶部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRolesVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限的对话框 -->
    <el-dialog title="分配权限" :visible.sync="SetRightDialogVisible" width="50%" @close="setRightDialogCLosed">
      <!-- 树形控件 -->
      <el-tree show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" :data="rightslist"
        :props="treeProps" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="SetRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      // 控制分配权限对话框的显示与隐藏
      SetRightDialogVisible: false,
      // 所有权限的数据
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的节点id值数组
      defKeys: [],
      // 当前即将分配权限的角色id
      roleId: '',
      // 添加用户的显示隐藏
      addRolesVisible: false,
      // 添加用户的表单数据
      addForm: {
        roleName: '',
        roleDesc: '',
      },
      editRolesVisible: false,
      // 添加表单的验证规则对象
      editForm: {},
      // 修改表单的正则
      addFormRoles: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          { max: 10, min: 5, message: '请输入5-10的长度', trigger: 'blur' },
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          { max: 10, min: 5, message: '请输入5-10的长度', trigger: 'blur' },
        ],
      },
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取所有角色的列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolelist = res.data
      // console.log(this.rolelist)
    },
    // 添加确定按钮
    addRoles() {
      // 判断表单是否可以
      this.$refs.addFormRef.validate(async (vaild) => {
        if (!vaild) return
        // 发送请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加角色失败')
        // console.log(res);
        this.addRolesVisible = false
        //  重新调一下函数 刷新
        this.getRolesList()
        this.$message.success('添加角色成功')
      })
    },
    // 监听用户关闭对话框的事件
    addRolesClosed() {
      this.$refs.addFormRef.resetFields()
    },
    editRolesClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 点击修改按钮
    async showEditRoles(id) {
      const { data: res } = await this.$http.get("roles/" + id)
      if (res.meta.status !== 200) return this.$message.error("查询角色信息失败")
      // console.log(res);
      this.editForm = res.data
      this.editRolesVisible = true
    },
    // 修改确认
    editUserInfo() {
      this.$refs.editFormRef.validate(async vaild => {
        // 验证不成功 return
        if (!vaild) return
        // 修改接口
        // console.log("11"+this.editForm.roleId);
        const { data: res } = await this.$http.put("roles/" + this.editForm.roleId, {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc
        })
        // console.log(res);
        // 判断状态码
        if (res.meta.status !== 200) return this.$message.error("更新用户信息失败")
        // 隐藏起来
        this.editRolesVisible = false
        // 刷新数据重新渲染
        this.getRolesList()
        // 成功弹框
        this.$message.success("更新角色信息成功")
      })
    },
    // 删除按钮
    async removeUserById(id) {
      const configResult = await this.$confirm("此操作将永久删除该用户,是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).catch(err => err)
      // 如果用户确认删除 字符串为 confirm
      // 如果用户取消删除 字符串为 cancel
      if (configResult !== "confirm") {
        return this.$message.info("已取消删除")
      }
      // 调删除接口
      const { data: res } = await this.$http.delete("roles/" + id)
      if (res.meta.status !== 200) return this.$message.error("用户删除失败")
      // 如果是200说明成功了
      this.$message.success("用户删除成功")
      // 重新获取
      this.getRolesList()
    },
    // 根据id去删除对应的权限
    async removeRightById(role, rightId) {
      // 弹框提示是否删除
      const configResult = await this.$confirm("此操作将永久删除该用户,是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).catch(err => err)
      if (configResult !== 'confirm') {
        return this.$message.info("已取消删除")
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) return this.$message.error("删除权限失败")
      // 不建议调这个 刷新
      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败')
      }
      // 把获取到的权限数据保存到 data中
      this.rightslist = res.data
      // 递归获取三级节点的id
      this.getLeafKeys(role, this.defKeys)

      this.SetRightDialogVisible = true
    },
    // 通过递归的形式 获取角色下所有三级权限的id，并保存到 defKeys 数组中
    getLeafKeys(node, arr) {
      if (!node.children) {
        // 如果当前 node 节点不包含children属性，则是三级节点
        return arr.push(node.id)
      }

      node.children.forEach(item =>
        this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogCLosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.SetRightDialogVisible = false
    }
  },
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
</style>
